PYRENE BICHROMOPHORES SUPPORTED ON POLYMER BEADS: A NEW LIBRARY OF FLUORESCENT MATERIALS FOR SENSING HEAVY METALS IN WATER

A new combinatorial library of fluorescent materials was prepared by covalent anchoring of 1-pyrene and 1-methylpyrene bichromophores to Merrifield and Wang resins functionalized with alkyl diamine spacers and its sensing properties. toward Pb2+, Cd2+ and Hg2+ were evaluated in water. It was found that the Wang resin modified with ethane-1,2-diamine as spacer and functionalized with the 1-pyrene bichromophore senses selectively Pb2+ with an enhancement of fluorescence intensity. The detection limit and the percentage of sorption were determined as 29.6 mu M and 80.3%, respectively.